Windows SysWOW64 Rundll32.exe Error Solutions

In this article, we will explore various solutions to fix the Windows SysWOW64 Rundll32.exe error that many users encounter while using their computer.

Understanding Rundll32.exe Errors

When encountering Rundll32.exe errors, it’s important to understand that this executable file is part of the Windows operating system and is used to execute DLL files. These errors can occur due to a variety of reasons, such as corrupted DLL files, malware infections, or issues with the OS.

To fix the problem, you can try running a virus scan, checking for corrupted files, or performing a system restore. Another option is to use the Task Manager to identify any rundll32.exe processes that are consuming too much CPU usage and terminate them.

If the issue persists, you may need to manually replace the affected DLL files or use a tool like Windows Resource Protection to repair them. Additionally, you can try disabling any startup processes that may be causing conflicts or errors.

Fixes for Rundll32.exe Application Errors

  • Run a Malware Scan
    • Download and install a reputable anti-malware program
    • Perform a full system scan
      Download and install a reputable anti-malware program
Perform a full system scan
    • Remove any identified threats
  • Perform a System File Checker Scan
    • Open the Command Prompt as an administrator
    • Type “sfc /scannow” and press Enter
      Open the Command Prompt as an administrator
Type "sfc /scannow" and press Enter
    • Wait for the scan to complete
    • If any issues are found, follow the prompts to repair them
  • Use System Restore
    • Open the System Restore utility
    • Select a restore point from before the Rundll32.exe error occurred
    • Follow the prompts to restore your system
  • Update Drivers
    • Identify the driver causing the Rundll32.exe error
    • Download and install the latest version of the driver from the manufacturer’s website
      Identify the driver causing the Rundll32.exe error
Download and install the latest version of the driver from the manufacturer's website
    • Restart your computer
  • Reinstall Windows
    • Back up all important files and data
    • Insert the Windows installation disc or USB drive
      Back up all important files and data
Insert the Windows installation disc or USB drive
    • Follow the prompts to reinstall Windows

Tools to Repair Corrupted DLLs

Tool Name Description Website
DLL Suite A comprehensive DLL repair tool that can fix DLL errors, optimize PC performance, and prevent future DLL problems.
Reimage Repair A software that can scan and repair damaged DLL files and other system components, as well as optimize overall PC performance.
CCleaner A system optimization tool that can clean up junk files, fix registry errors, and repair corrupted DLL files.
System File Checker (SFC) A built-in Windows tool that can scan and replace corrupted system files, including DLL files. N/A
Windows Repair Tool A software that can repair a variety of system errors, including DLL errors, registry errors, and file permissions issues.


int main() {
// Retrieve the path of the rundll32.exe file
GetSystemDirectory(szPath, MAX_PATH);
lstrcat(szPath, TEXT("\\syswow64\\rundll32.exe"));

// Check if the file exists
if (PathFileExists(szPath)) {
// File exists, do something
} else {
// File does not exist, handle the error

return 0;

In this code, we are using the Windows API function `GetSystemDirectory` to retrieve the path to the rundll32.exe file in the syswow64 folder. We then use `PathFileExists` to check if the file exists. Depending on the result of this check, we can then handle the error or proceed with the intended functionality.

Again, please note that this is just a sample code and may not work in all scenarios. It is always advisable to consult official documentation and seek expert advice before developing any tools associated with system files.

Updating Your System to Prevent Errors

To prevent errors related to Windows SysWOW64 Rundll32.exe, it’s essential to keep your system updated. Make sure you have the latest version of your OS installed, whether it’s Windows 7, Windows XP, or Windows 10.

If you encounter a runtime error related to rundll32.exe, the first step is to identify the problem. Check the Task Manager for entries related to the rundll32.exe executable file. This will give you more info about what’s causing the issue.

To fix rundll32 errors, you can try running a virus scan, updating your drivers, or using the Properties window to adjust the compatibility settings. You can also try using a pen drive to boot into your system and access the rundll32.exe file directly.

Remember to always be cautious when dealing with system processes and executable files. If you’re unsure about something, it’s better to seek help from a professional. With these solutions, you can fix rundll32 errors and keep your system running smoothly.

Troubleshooting Rundll32.exe Errors

If you’re experiencing errors with the Rundll32.exe process in your Windows SysWOW64 folder, there are a few solutions to try. Firstly, ensure that your system isn’t infected with any viruses or malware by running a full system scan. If the issue persists, you can try the following steps:

1. Identify the specific DLL causing the error by using the Process Explorer tool.
2. Disable any startup processes related to the DLL by opening the Properties window and unchecking the relevant entries.
3. Remove any unnecessary DLLs from your repository to reduce the number of files Rundll32.exe needs to load.
4. Check that you have the appropriate permissions to access the DLL and its associated files.

Remember to always exercise caution when editing system processes and files. If you’re unsure about anything, it’s best to seek expert advice.

Detecting and Protecting Against Malicious Rundll32.exe Activities

Detecting and Protecting Against Malicious Rundll32.exe Activities
What is Rundll32.exe? Rundll32.exe is a legitimate Windows system file that is responsible for executing DLL files. It is located in the System32 folder for 64-bit operating systems and in the SysWOW64 folder for 32-bit operating systems.
What are the Malicious Rundll32.exe Activities? Malicious actors can use Rundll32.exe to execute malicious code on a victim’s computer. This can include downloading and installing malware, stealing sensitive information, and performing other malicious activities.
How to Detect Malicious Rundll32.exe Activities? There are several ways to detect malicious Rundll32.exe activities, including:
    1. Using antivirus software to scan for malware     2. Monitoring network traffic for suspicious activity
    3. Checking the Windows Event Viewer for error messages related to Rundll32.exe     4. Using process monitoring tools to identify suspicious processes
How to Protect Against Malicious Rundll32.exe Activities? To protect against malicious Rundll32.exe activities, you can take the following steps:
    1. Keep your antivirus software up-to-date and run regular scans     2. Use a firewall to block incoming and outgoing traffic from suspicious IP addresses
    3. Use strong and unique passwords for all your online accounts     4. Disable unnecessary Windows services and features
Was this article helpful?